Drilling-machine for rails.



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APPLICATION IILED DE..17,1907.

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J. WEIMER & R. H. WALLACE.

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DRILLING MACHINE FOB. RAILS.

APPLICATION FILED DEC. 17,1907.

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JAMES WEIMER, OF SWISSVALE, AND ROBERT WALLACE, OF NEW BRIGHT-ON, PENNSYLVANIA.

DRXLLNG-WACHINE FOR RAILS.

Application filed December 17, 1907.

To all whom it may Concern.'

Be it known that we, JAMEs l/Vnnxrnn and )toBERT H. WALLACE, citizens of the United States of America, residing at (1) Swissvale, (2) New Brighton, in the county of (1) Allegheny, (2) Beaver, and State of Pennsylvania, have invented certain new and use ful Improvements in Drilling-Machines for Rails, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to a rail drilling ma chine, and the objects of the invention are, first, to provide a portable machine for drilling one or more holes in the web of a rail g second, to provide a strong and durable machine that can be easily manipulated third, to provide a portable machine that can be easily and quickly clamped to a rail and fourth, to provide a machine wherein novel means is employed for feeding the drills or bits when in operation. lil/'e attain these objects by a novel maehine that will be presently described, and then specifically pointed out in the appended claims.

Referring to the drawings forming a part of this specification, Figure 1 is a side elevation of a machine constructed in accordance with our invention, Fig. 2 is a front elevation of the same, Fig. 3 is a plan of the machine, Fig. 4 is a cross sectional view of the machine taken on the line lV-1V of Fig. ,3, Fig. 5 is a longitudinal sectional view of a portion of the machine, Fig. 6 is a plan of the frame-work of the machine, with the carriage thereof removed, and Fig. 7 is a plan of the carriage partly in section.

To put our invention into practice, we provide a U -shaped metallic base frame, having its side rails 1 provided with heads 2, these heads, together with depending legs 3 carried by the rails 1, constituting supports for the machine. The heads are flanged, as at 4 to bear against the web portion 5 of a rail, and are formed with extensions 6 adapted to overlie the tread 7 ofthe rail.

Pivotally connected to the outer ends of the extensions 6 are clamps 8, these clamps engaging the web portion 5 of a rail upon the opposite side from the flanges of the head 2.

To maintain the pivoted clamps 8 in engagement with a rail, we journal a shaft 9 in the extensions 6, this shaft having angularly disposed arms 10 for engaging the Specification of1 Letters IPatent.

Patented 18, 1909.

Serial No. 406,831.

clamps 8 above the pivotal points thereof and firmly holding thelower ends of said clamps against the web 5 of the rail. The shaft 9 is provided with a crank 11 connected by a link 12 to an operating lever 13, said lever being mounted upon the outer end of a shaft 14 ournaled in the heads 2 and positioned adjacent to one of said heads.

A segment-shaped rack 15 is seeured to one of the heads 2 adjacent to the operating lever 13, this rack, together with a spring pressed lever 16, serving to hold the operating lever 13 in the position to which it n'iay be adjusted.

The inner sides of the rails 1 are provided with longitudinally disposed guides 17 for a drill supporting carriage. This carriage comprises bars 18, connected by two-part bearings 19, 20 and 21, the ends oisaid bearings embracing the guides 17. ln the bearings 20 and 21 is journaled a longitudinal shaft 22, and keyed upon said shaft is a sprocket wheel 23 and an internal spur gear 2e. ln the bearings 19 and 2O are journalei'i longitudinal bit holders 25 and 26, having bits 27. The bit holder 25 is adjustable, whereby short lengths of bits can be used in connection with the machine. The bit holders 25 and 26 carry pinions 28, meshing with the internal spur gear 24.

The ends of the bearings 19 and 21 are provided with lugs 29 and secured to said lugs is a skeleton standard. This standard comprises four uprights 30 having their upper ends bent inwardly for supporting bearing blocks 31, said blocks being secured between the uprights by bolts or rivets 32. ln the bearing blocks 31 is journaled a longitudinal shaft 33 having a detachable crank 34 and a large sprocket wheel 35. Passing` over this sprocket wheel and the small sprocket wheel 23 of the shaft 22 is an endless sprocket chain 36.

The drill supporting carriage is fed forward by a spring actuated device comprising two coil springs 37, said springs encircling rods 38 carried by the connecting bar 39 of the rails l. The rods 38 extend into openings 110 provided therefor in the two-part bearing 21. These rods are provided with a movable cross head 41, and interposed between the cross head and the bearing 21 are sleeves 42, said sleeves surrounding the rods 38. The tension of the springs 37 normally holds the cross head 41 in engagement with the sleeves 42, and said sleeves in engagement with the carriage or bearing 21, conse uently this spring actuated device will feed t e bits 27 forward when piercing the web of a rail.

in order to move the carriage rearwardly, we have devised means for compressing the coil springs 37, also means for moving the carriage rearwardly. The first means comw prises a shaft 43 journaled in the legs 3, said shaft being provided with curved arms 44 for engaging` the cross head 41 near its ends.`

The protruding end of the shaft 43 is provided with a crank 45, and this crank is connected by a link 46 to the crank 47 mounted on a shaft 48, journaled in the heads 2. Connected to the crank 47 isv a rearwardly extending operating rod 49, this rod being supported by a bracket 50 carried by one of the uprights 30. The means employed for moving the carriage rearwardly comprises two curved arms 51 fixed upon the shaft 14, these arms engaging the forward ends of the bars 18, or the bearing 19.

In connection with the skeleton standard, and the sprocket chain 36., we use a tension device for maintaining the sprocket chain in a taut condition upon the sprocket wheels and 23. rlhis tension device comprises a flanged pulley 52 revolubly carried by a shaft 53 supported by an arm 54. The arm 54 is adjustably connected to a slotted bracket 55, carried by one of the uprights 30.

It its thought that the manner in which the rotary movement is imparted to the bits will be fully understood from the novel construction of our machine lt will be observed that the carriage can be moved in either direction, and that the machine is as compact as possible for obtaining the desired result.

TWe reserve the right to make such struc-V tural changes as are permissible by the appended claims.

Having now described our invention what we claim as new, is

1. A rail drilling machine embodying a carriage supporting frame adapted to project laterally with respect to the rail and comprising a rail web engaging portion and a rail tread engaging'- portion, clamps pivoted to the rail tread engaging portion of said frame and engaging the web of the rail, an adjustable operating lever pivotally sup ported upon said frame, means connected to the rail tread engaging portion of said frame and actuated by said lever and engaging said clamps for holding these latter in a locked position, and means for maintaining the le ver in the position to which it has been ad* liusted.

2. A rail drilling machine comprising a portable carriage supporting frame, a shiftable carriage slidably mounted in said frame, rotatable bit holders mounted in said car riage, means for rotating the bit holders, a spring-actuated means for shifting said carriage toward the web of the rail, and means arranged at the forward end of said frame for moving said carriage rearwardly.

ln testimony whereof we afliX our signatures in the presence of two witnesses.,

JAMES WEIME ROBERT H. VALLACE.

Witnesses:

MAX SnoLovirz, A. J TRIGG. 

